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Finding the Fourth Proportional to 661,265.60, 991,898.40 and 162,629.60

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Solution

The fourth proportional to 661,265.60, 991,898.40 and 162,629.60 is: 243,944.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,265.60 : 991,898.40 = 162,629.60 : x
  2. Step 2: Convert to fraction form
    661,265.60/991,898.40 = 162,629.60/x
  3. Step 3: Cross multiply
    661,265.60x = 991,898.40 × 162,629.60
  4. Step 4: Simplify right side
    661,265.60x = 161,312,040,032.64
  5. Step 5: Solve for x
    x = 161,312,040,032.64/661,265.60
  6. Step 6: Final answer
    x = 243,944.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.